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Network Interface Cards (NICs) often maintain multiple queues for transmitted and received packets and the Linux operating system kernel can be tuned to have each queue handled by a specific CPU core. To obtain peak performance from a network service on modern multicore computer systems, it’s desirable to ensure a balanced workload on each NIC queue and CPU core. The NIC drivers on Linux typically
The first release of BIND 9 was in September 2000. In the intervening 16 years, we have issued 225 more releases, give or take a few. We have continuously added new additional features and RFCs. BIND 9 is a big project: at last count there were 691,554 lines of code* in BIND. That is 3 times the size of PowerDNS, 5 times the size of the Unbound resolver, and 6 times the size of the Knot authoritat
Kea DHCP Modern, open source DHCPv4 & DHCPv6 server ISC distributes TWO full-featured, open source, standards-based DHCP server distributions: Kea DHCP and ISC DHCP. Kea includes all the most-requested features, is far newer, and is designed for a more modern network environment. ISC announced the End of Life for the older ISC DHCP system in 2022. Users of ISC DHCP may find these resources helpful
Programming Languages for BIND 10 This blog post comes in response to a question that arrived via Twitter: @nodakai: WHY BIND10 had to be written in C++?? I think supporters of managed languages have much to learn from this unfortunate incident When I started working on the BIND 10 project the only decision made was which languages to use, after the expected bikeshed discussion. The important thin
BIND 10 is ISC's next generation of BIND, the most widely used DNS server on the internet. In its fourth year of development, BIND 10 has reached a major milestone: the Alpha Release of the authoritative nameserver! BIND 10 alpha is available now, with the Beta being released toward the end of 2012. The DHCP implementation and recursive resolver are both planned to enter user test later in 2013. T
F Root System Enables users around the world to find top-level domains such as .com, .uk, .edu Reliable anycast network with over 125 nodes Hosted in local IXes, and on the Cloudflare network, managed by ISC
Downloads ISC's software is open source and available for free ISC software posted here is signed with ISC’s OpenPGP public key and is available for use under the Mozilla Public License 2.0, except for the older branch of ISC DHCP, which is licensed under the ISC License. You may obtain the current keys used for signing ISC software here. If you would prefer to use FTP to download our tarballs, al
RDATAフィールドの長さが0であるようなDNSのリソースレコードによって、それを処理するサーバに種々の障害が生じる可能性があります。 CVE: CVE-2012-1667 文書バージョン: 1.0 公開日付: 2012年6月4日 影響を受けるプログラム: ISC BIND 影響を受けるバージョン: すべてのバージョンの BIND 9 深刻度: 重大な(Critical) 攻撃方法: 遠隔から可能 詳細: 本問題は試験的なDNSのレコード型のテスト中に発見されました。BINDにはヌル(つまり長さが0の)RDATAを持つレコードを追加することが可能です。 このようなレコードを処理することで、想定外の結果が生じる可能性があります。キャッシュ(recursive)サーバの場合、サーバがクラッシュしたり、サーバメモリ内の情報がクライアントに開示されたりする可能性があります。セカンダリサーバの場合、
BIND 9 Security Vulnerability Matrix The BIND 9 Security Vulnerability Matrix is a tool to help DNS operators understand the current security risk for a given version of BIND. It has two parts: The first part is a table listing all of the vulnerabilities covered by this page. The first column… CVE-2018-5740: A flaw in the "deny-answer-aliases" feature can cause an assertion failure in named A rare
BIND 9キャッシュサーバがquery.cでエラーログを出してクラッシュする インターネット上の複数の組織から、BIND 9のキャッシュサーバが再起問い合わせの処理中にクラッシュして停止するという報告がありました。影響を受けるサーバはquery.c(ソースファイル) において以下のメッセージをログに出力した後にクラッシュしています: "INSIST(! dns_rdataset_isassociated(sigrdataset))" 報告によれば、現在サポートされているすべてのリリースバージョンを含む複数のバージョンが影響を受けています。ISCでは全力を挙げて原因の究明にあたっており、また、クラッシュを回避するパッチをを作成しました。さらに詳しい情報は得られ次第ご報告します。 CVE: CVE-2011-4313 文書バージョン: 1.1 公開日付: 2011年11月16日 影響を受ける
To use the signed root zone in DNSSEC validation in your BIND 9 resolvers, you must be running BIND 9.6 or higher. Earlier versions do not support the required algorithms to enable validation using the root zone's key. The recommended procedure to use differs for the BIND 9.6 series and later versions, including BIND 9.7. For BIND 9.6, you must use a trusted-keys statement, which must be manually
BIND 9 Versatile, classic, complete name server software BIND 9 has evolved to be a very flexible, full-featured DNS system. Whatever your application is, BIND 9 probably has the required features. As the first, oldest, and most commonly deployed solution, there are more network engineers who are already familiar with BIND 9 than with any other system. BIND 9 is transparent open source, licensed u
BIND denial of service (server crash) caused by receipt of a specific remote dynamic update message. Urgent: this exploit is public. Please upgrade immediately. Receipt of a specially-crafted dynamic update message to a zone for which the server is the master may cause BIND 9 servers to exit. Testing indicates that the attack packet has to be formulated against a zone for which that machine is a m
ISC DHCP Enterprise-grade solution for IP address-configuration needs ISC has announced the end of maintenance for ISC DHCP as of the end of 2022. ISC will continue providing professional support services for existing subscribers, but does not intend to issue any further maintenance releases. For resources that may help in migrating your existing ISC DHCP server deployment to our newer DHCP server
BIND 9.6.0-P1BIND 9.6.0-P1 is a Current - Production Release, published 7 January 2009. Includes patch for CVE-2009-0025. Read more & download BIND 9.5.1-P1BIND 9.5.1-P1 is a Current - Production Release, published 7 January 2009. Includes patch for CVE-2009-0025. Read more & download
On November 14 2008, ISC switched to a new website. The URL that you used to reach this page is from the old site. Click here to get to the new site, but before you do, please adjust your bookmarks to https://www.isc.org/
Open Source For an Open Internet Non-profit organization fostering the development and maintenance of Internet infrastructure and core software for the benefit of the public since 1994. DOWNLOADS Our Products ISC develops and distributes three open source Internet networking software packages: BIND 9, ISC DHCP, and Kea DHCP, and operates the F Root domain server. BIND 9, ISC’s Domain Name System (
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